One of Ukraine's most senior military officers is warning the fiercest fighting from Russia is yet to come.
Major General Andrii Kovalchuk says they're preparing for the possibility of a renewed offensive - one year on from the full invasion.
He says if it does happen, they'll be ready:
"I believe our position, and the position of our partners, today should be clear. If Putin carries out a full mobilisation, our partners are ready to provide us with all the force and means to stop not an army of 300,000, but an army of a million".
